GM Column Wiring - Help Please
While waiting for the blue prints for the new house (can't build a thing without prints you know) I had a little extra time so I figured I'd do a little work on the truck, mainly get the tail lights installed so I can get the thing on the road. Anyway, it became pretty obvious right off that I had used the wrong wiring diagram when I hooked the harness up to the plug for the column. (Interesting things were happening like, front parking lights flashing all the time, right rear and third brake lites working fine but left not working unless I jiggled the wires in the column, no turn signals on the rear, horn on all the time and if I turn the flashers on my electric fuel pump cycles on and off.) I now have the correct schematic for the column and I'm going to double check the pin out on my harness to see if I have to switch any wires. Anyway.....
I bought the column at a swap meet and eventually ID'd it as a 69-90 Chevy car tilt column. It was a locking column and I removed the key and lock mechanism (I always hated those locks that keep the column from turning anyway) and I covered the hole and dressed the column so you would never be able to tell it once was a key in column setup. That is the extent of the mods. The harness seemed OK when I inspected it initially but after disassembling it this time I found the turn signal switch had broken. The plastic was a bit brittle and it just broke in one spot. Took a quick trip down to Napa and I now have a new switch and wiring harness.
Here's my question. On this harness as on the old one there are two wires more or less by themselves that run to two small plugs in the turn signal switch plate. One is tan and the other is green and they hook to the E and F terminals on the plug. I suspect they are for an optional security system but I'm not sure. Anyone know for sure what they are?